From: Fred Isaman <iisaman@xxxxxxxxxxxxxx>
This needs to be changed, but will require a major rewrite
of the block layout's IO code. Including it here so I can
get some current code into the tree.
Change write_end_cleanup API to allow block driver the ability to
handle server blocks larger than a page in size. It needs to
initiate writes to adjacent pages, so pass in filp so that it
can call the appropriate aop functions. A field is also added to
fsdata to hold the list of pages.
Signed-off-by: Fred Isaman <iisaman@xxxxxxxxxxxxxx>
Signed-off-by: Benny Halevy <bhalevy@xxxxxxxxxxx>
---
fs/nfs/pnfs.h | 5 +++++
1 files changed, 5 insertions(+), 0 deletions(-)
diff --git a/fs/nfs/pnfs.h b/fs/nfs/pnfs.h
index cfa8ea6..ac536bc 100644
--- a/fs/nfs/pnfs.h
+++ b/fs/nfs/pnfs.h
@@ -56,6 +56,7 @@ enum pnfs_try_status {
struct pnfs_fsdata {
struct pnfs_layout_segment *lseg;
+ void *private;
};
#ifdef CONFIG_NFS_V4_1
@@ -116,6 +117,8 @@ struct pnfs_layoutdriver_type {
int (*write_end)(struct inode *inode, struct page *page, loff_t pos,
unsigned count, unsigned copied,
struct pnfs_layout_segment *lseg);
+ void (*write_end_cleanup)(struct file *filp,
+ struct pnfs_fsdata *fsdata);
void (*free_deviceid_node) (struct nfs4_deviceid_node *);
@@ -356,6 +359,8 @@ static inline void pnfs_write_end_cleanup(struct file *filp, void *fsdata)
struct nfs_server *nfss = NFS_SERVER(filp->f_dentry->d_inode);
if (fsdata && nfss->pnfs_curr_ld) {
+ if (nfss->pnfs_curr_ld->write_end_cleanup)
+ nfss->pnfs_curr_ld->write_end_cleanup(filp, fsdata);
if (nfss->pnfs_curr_ld->write_begin)
pnfs_free_fsdata(fsdata);
}
--
1.7.4.1
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